Keyhole State Park features 5 boat ramps providing access to Keyhole Reservoir, with 4 ramps equipped with docks located at Wind Creek Campground, Coulter Bay Area, Pat's Point Campground, and the Marina, plus one additional ramp at Tatanka Campground without a dock.

Ramps are seasonal and open for boating when ice-free, then transition to ice fishing access in winter. A daily use fee ($6 residents/$9 non-residents) is required for park entry, with no additional charge for ramp or dock use.